Adjusting air duct

Abstract

An adjusting air duct adopts a novel design so that it is movable according to the location of the heat generating source in a computer host to be aligned with air vents of the side board of the computer host. Therefore external cooling air may be sucked in through fans and channeled to the heat generating source through the air duct to achieve optimal heat dissipation effect.

1 . An adjusting air duct having one end coupling with radiation fins mounted on a heat generating source and a first fan and other end corresponding to air vents of a computer case, comprising: 
 an air duct assembly including a first duct and a second duct, the first duct being coupled with the radiation fins, the second duct being pivotally coupled with the first duct through a first coupling means for forming a relative movement with the first duct; and    an adjusting member coupling with the second duct through a second coupling means for generating a relative movement with the second duct, the adjusting member having a fastening slot and being slidable on and fastenable to a sliding track of the computer case;    wherein the relative movements between the first duct and the second duct, and between the second duct and the adjusting member are adjustable through the first coupling means and the second coupling means according to different locations of the heat generating source in the computer case to align the air duct assembly with the air vents of the computer case.    
   
   
       2 . The adjusting air duct of  claim 1 , wherein the first duct includes an annular member to cover the radiation fins and a tube extending from the center of the annular member, the second duct having a sleeve to couple with the tube and a ventilation opening extended from one end of the sleeve, the first coupling means including a plurality of helical grooves formed on an outer wall of the tube and a bulged element on an inner wall of the sleeve corresponding to and engageable with the helical grooves.  
   
   
       3 . The adjusting air duct of  claim 2 , wherein the ventilation opening houses a second fan.  
   
   
       4 . The adjusting air duct of  claim 2 , wherein the second coupling means includes a latch member located on one end of the ventilation opening, the latch member having a strut in a middle portion and two latch arms on two sides, the adjusting member having a housing compartment to hold the latch member, the housing compartment having a trough matching the strut and teeth racks matching the latch arms such that the latch member is insertable into the housing compartment with the strut wedging into the trough and the latch arms latching on the teeth racks.  
   
   
       5 . The adjusting air duct of  claim 4 , wherein the strut has an aperture, the trough having a slot to receive a fastening element to engage with the aperture.  
   
   
       6 . The adjusting air duct of  claim 1 , wherein the adjusting member has a pair of hooks to couple on the sliding track of the computer case.